As i heard if you will inject steroids without esters like Testosterone Suspension, then some people say it is possible.
As you know all esterified steroids break down in blood stream and travel all over the body from injection site. So its not possible this type of steroid can make 1 muscle bigger than others
But on the other hand if you will inject Test Suspension to some specific muscles, steroid cystals will stick to that muscle and it can consumed more by that specific muscle. As you know Test Base is directly steroid crystals. But difference in mass should be slighty seen . Maybe noticable gains can be achieved after long months of administration.